NIGP 21010: Blocks, Hollow and Solid, Lightweight

NIGP 21010 Blocks, Hollow and Solid, Lightweight is an Item code that captures state and local procurement of modular retaining wall units and related blockwork for infrastructure and site improvement projects. Recent solicitations show this code covers both prefabricated modular block wall systems and associated site preparation, installation, and finishing work — including excavation, foundation work, paving, concrete work, and landscaping integration — rather than procurement of raw block material alone.

State and local issuing bodies soliciting under this code span cities, counties, state transportation departments, and special-purpose authorities. The City of Pittsburgh Office of Management and Budget has issued multiple modular block wall construction bids (IFB 2024-IFB-003 in April 2024 and IFB 2024-IFB-166 in July 2024), indicating repeat procurement activity for infrastructure renewal. Other recent solicitors include the Palm Desert Housing Authority (interior renovation including modular wall components), the Utah Department of Transportation (precast concrete cattle guard fabrication), and Santa Clara County (pavement rehabilitation and related infrastructure). Geographic concentration is heaviest in California, Pennsylvania, Utah, and Arizona, with additional activity in Texas and Maryland. Representative recent opportunities include the City of Pittsburgh's April 2024 IFB for modular block wall construction across 29 line items with unit-cost bidding and prevailing wage compliance; the Palm Desert Housing Authority's July 2024 bid for Unit 13 interior renovation requiring modular wall installation within 30 days of Notice to Proceed; and the City of Scottsdale's March 2026 RFSQ for Job Order Contract services encompassing civil and site work including landscaping and minor design, with up to five contractors selected and potential aggregate contract value reaching $30 million across the full contract period with renewals.